Comment 2 for bug 693811

While not a showstopper, this bug, which dates to 2010, is a serious usability issue. The lack of a Back button makes it almost impossible to search for a particular photo. Normally one does this starting at a high level view (library or events), diving down to photo view to see if you found what you wanted, then zooming Back out to the high level and continuing the search. Rinse and repeat. The lack of a Back button makes this operation impossible.